# x=1
# y =1
# print(id(x))
# print(id(y))
l=[1,2,3]
print(l)
print(id(l))
print(id(l[0]))
print(id(l[2]))
l[2] = 300
print(l)
print(id(l))
print(id(l[0]))
print(id(l[2]))